Nikon 300mm f/4.5 NIKKOR-P Auto Non AI Nippon Kogaku Japan Manual Focus Lens Review

This is a vintage manual focus telephoto lens from Nikon's pre-AI era, produced by Nippon Kogaku Japan. The 300mm f/4.5 NIKKOR-P Auto was a solid performing telephoto in its day, built during a period when Nikon glass earned its reputation for optical quality and mechanical durability. At 300mm, it offers meaningful reach for wildlife, sports, and portraiture, though at f/4.5 it's half a stop slower than many modern equivalents.

As a non-AI lens, it won't meter on most modern Nikon DSLRs without modification or AI conversion, limiting its practicality for everyday shooting. That said, it can be adapted to mirrorless bodies with manual focus aids, where its optics can still deliver pleasing results for those comfortable working fully manual. This particular example is listed in bargain condition from a used dealer, suggesting visible wear or optical imperfections that should be factored into expectations. At $74, it sits in vintage curiosity territory rather than serious working tool, appealing primarily to collectors, manual focus enthusiasts, or those experimenting with legacy glass on adapted systems.